2023 Subaru Ascent Technical Service Bulletins

293 technical service bulletins (TSBs) are on record for the 2023 Subaru Ascent. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10238458Jun 23, 2023Equipment, Electrical system. This bulletin provides instruction for use of a new reprogramming procedure to optimize the Denso Gen 4.5 Audio and Navigation system utilized in the models listed.
• 10238440Jun 13, 2023Transmission and drivetrain, Engine cooling. This service bulletin provides a temporary repair procedure to address vibrations and/or judder concerns experienced on turns during acceleration.
• 10238452Jun 6, 2023Equipment, Electrical system. This Service Information Bulletin announces the new control module software reprogramming procedures.
• 10238441Jun 5, 2023Lane departure, Electrical system. This Bulletin provides the printable target chart needed to perform the wide angle mono camera adjustment procedure for the EyeSight system.
• 10238438Jun 5, 2023Equipment, Other or unknown, Engine cooling, Electrical system. This Service Information Bulletin provides the diagnostic procedure for the STARLINK® Remote Engine Start (RES). All Gen2 and Gen3 Telematics Equipped Models.
• 10238434Jun 2, 2023Suspension. WRJ-23 Front lower arm castle nut torque.
• 10238432Jun 2, 2023Suspension. Subaru of America, Inc. (Subaru) has initiated a safety recall for certain 2023 model year Ascent vehicles that may be equipped with a front lower control arm with a loose castle nut.
• 10237302May 31, 2023Equipment, Electrical system. To improve our customer’s experience with software updates, bug fixes and performance enhancements, we are launching our first Head Unit FOTA to eligible customers who are subscribed to STARLINK Safety Plus.
• 10237298May 25, 2023Electrical system. This Service Information Bulletin announces the new control module software reprogramming procedures for 2022MY and later BRZ models.
• 10237291May 22, 2023Suspension. This bulletin provides a procedure to address customer concerns of surface rust accumulating in the top center retaining nut area of the front strut mounts.
• 10237284May 16, 2023Equipment, Electrical system. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
• 10237278May 16, 2023Transmission and drivetrain. This bulletin announces availability of reprogramming files to optimize the Transmission Control Module (TCM).
• 10237272May 11, 2023Electrical system, Equipment. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 10235299Apr 28, 2023Wheels. UPDATE Safety Recall/STOP SALE: WRH-23 Tire Bead Damage.
• 10235289Apr 27, 2023Transmission and drivetrain. This Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models listed.
• 10235314Apr 26, 2023Equipment, Electrical system. Reprogramming File Availability for Optimization of Gen 4.5 Denso CP1.5 Infotainment Systems
• 10235287Apr 11, 2023Equipment, Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 10235286Apr 7, 2023Wheels. Subaru of America, Inc. (Subaru) is initiating a new safety recall and stop sale for certain 2023 model year Ascent vehicles equipped with 20-inch wheels.
• 10235285Apr 5, 2023Electrical system, Equipment. This Service Information Bulletin provides helpful procedures and best practices to utilize when customers present with concerns relating to the operation of their Gen 2/Gen 3 Telematics system equipped Subaru.
• 10235282Apr 5, 2023Equipment, Body and structure. This bulletin provides a repair procedure to address a small number of customer concerns of the hood panel surface vibrating while driving.
• 10235276Apr 5, 2023Wheels. Subaru of America, Inc. (Subaru) is initiating a new safety recall and stop sale for certain 2023 model year Ascent vehicles equipped with 20-inch wheels.
• 10233907Mar 23, 2023Equipment, Electrical system. This Bulletin provides reference tables and photos to use for determining the infotainment head unit supplier and generation.
• 10233899Mar 15, 2023Electrical system, Equipment. USB Map Data Update Procedure for Denso Gen 4 Navigation Equipped System.
• 10233871Mar 9, 2023Electrical system, Equipment. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
• 10233867Mar 6, 2023Electrical system. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
• 10232239Feb 28, 2023Equipment, Electrical system. This Service Information bulletin has been developed for use as a quick reference tool to aid in diagnosing operational concerns of the Gen 2 Telematics system’s remote access features.
• 10232237Feb 28, 2023Electrical system, Equipment. When attempting to complete the STARLINK Telematics subscription process, an Error Code 202 and / or 204 may occur preventing the process from completing successfully.
• 10232231Feb 24, 2023Equipment, Electrical system. The following information announces reprogramming file availability and provides a software update installation procedure to optimize the new Gen 4.5 Denso CP1.5 Audio and Navigation head units utilized in the models listed.
• 10231296Jan 24, 2023Electrical system. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
• 10231299Jan 12, 2023Transmission and drivetrain. This Service Information Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models listed.
• 10231291Jan 9, 2023Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 10228796Dec 30, 2022Electrical system, Equipment. This Service Information Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
• 10228788Dec 20, 2022Electrical system, Equipment. This Bulletin has been developed to outline the steps for gathering basic but essential information during diagnosis of Infotainment concerns.
• 10228780Dec 9, 2022Electrical system. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 10228777Dec 3, 2022Electrical system. This bulletin announces a new Genuine Subaru Replacement battery for use in applications where the current SOA821B700 battery is specified.
• 10226904Nov 17, 2022Transmission and drivetrain. This Bulletin provides updated diagnostic procedures to follow and a brief questionnaire to complete when diagnosing an alleged Chain Slip condition on the TR580 and TR690 model CVT transmissions used in the models listed.
• 10226863Nov 17, 2022Electrical system, Equipment. This bulletin announces availability of new Harman audio unit amplifier units with revised internal logic designed to optimize efficiency while addressin customer concerns.
• 10225766Oct 18, 2022Electrical system, Equipment. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
• 10225762Oct 12, 2022Electrical system. This Bulletin outlines a new required procedure to follow when performing immobilizer-related repairs.
• 10222365Sep 27, 2022Electrical system, Equipment. This bulletin contains illustrations of exchange components and their manufacturer as well as a description of the proper exchange procedure.
• 10232535Jul 17, 2014Electrical system. Replacement Key and Immobilizer Info
• 10232894Mar 7, 2014Engine cooling. Effective with all 2015 model year cars and forward, the oil change interval is changing to 6,000 miles or 6 months, whichever comes first.
• 10233119Apr 25, 2013Engine cooling. Oil Filler Cap Gasket Coming Unseated

← All problems reported for the 2023 Subaru Ascent